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1da177e4 LT |
1 | /* fsclient.c: AFS File Server client stubs |
2 | * | |
3 | * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/init.h> | |
13 | #include <linux/sched.h> | |
14 | #include <rxrpc/rxrpc.h> | |
15 | #include <rxrpc/transport.h> | |
16 | #include <rxrpc/connection.h> | |
17 | #include <rxrpc/call.h> | |
18 | #include "fsclient.h" | |
19 | #include "cmservice.h" | |
20 | #include "vnode.h" | |
21 | #include "server.h" | |
22 | #include "errors.h" | |
23 | #include "internal.h" | |
24 | ||
25 | #define FSFETCHSTATUS 132 /* AFS Fetch file status */ | |
26 | #define FSFETCHDATA 130 /* AFS Fetch file data */ | |
27 | #define FSGIVEUPCALLBACKS 147 /* AFS Discard callback promises */ | |
28 | #define FSGETVOLUMEINFO 148 /* AFS Get root volume information */ | |
29 | #define FSGETROOTVOLUME 151 /* AFS Get root volume name */ | |
30 | #define FSLOOKUP 161 /* AFS lookup file in directory */ | |
31 | ||
32 | /*****************************************************************************/ | |
33 | /* | |
34 | * map afs abort codes to/from Linux error codes | |
35 | * - called with call->lock held | |
36 | */ | |
37 | static void afs_rxfs_aemap(struct rxrpc_call *call) | |
38 | { | |
39 | switch (call->app_err_state) { | |
40 | case RXRPC_ESTATE_LOCAL_ABORT: | |
41 | call->app_abort_code = -call->app_errno; | |
42 | break; | |
43 | case RXRPC_ESTATE_PEER_ABORT: | |
44 | call->app_errno = afs_abort_to_error(call->app_abort_code); | |
45 | break; | |
46 | default: | |
47 | break; | |
48 | } | |
49 | } /* end afs_rxfs_aemap() */ | |
50 | ||
51 | /*****************************************************************************/ | |
52 | /* | |
53 | * get the root volume name from a fileserver | |
54 | * - this operation doesn't seem to work correctly in OpenAFS server 1.2.2 | |
55 | */ | |
56 | #if 0 | |
57 | int afs_rxfs_get_root_volume(struct afs_server *server, | |
58 | char *buf, size_t *buflen) | |
59 | { | |
60 | struct rxrpc_connection *conn; | |
61 | struct rxrpc_call *call; | |
62 | struct kvec piov[2]; | |
63 | size_t sent; | |
64 | int ret; | |
65 | u32 param[1]; | |
66 | ||
67 | DECLARE_WAITQUEUE(myself, current); | |
68 | ||
69 | kenter("%p,%p,%u",server, buf, *buflen); | |
70 | ||
71 | /* get hold of the fileserver connection */ | |
72 | ret = afs_server_get_fsconn(server, &conn); | |
73 | if (ret < 0) | |
74 | goto out; | |
75 | ||
76 | /* create a call through that connection */ | |
77 | ret = rxrpc_create_call(conn, NULL, NULL, afs_rxfs_aemap, &call); | |
78 | if (ret < 0) { | |
79 | printk("kAFS: Unable to create call: %d\n", ret); | |
80 | goto out_put_conn; | |
81 | } | |
82 | call->app_opcode = FSGETROOTVOLUME; | |
83 | ||
84 | /* we want to get event notifications from the call */ | |
85 | add_wait_queue(&call->waitq, &myself); | |
86 | ||
87 | /* marshall the parameters */ | |
88 | param[0] = htonl(FSGETROOTVOLUME); | |
89 | ||
90 | piov[0].iov_len = sizeof(param); | |
91 | piov[0].iov_base = param; | |
92 | ||
93 | /* send the parameters to the server */ | |
94 | ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS, | |
95 | 0, &sent); | |
96 | if (ret < 0) | |
97 | goto abort; | |
98 | ||
99 | /* wait for the reply to completely arrive */ | |
100 | for (;;) { | |
101 | set_current_state(TASK_INTERRUPTIBLE); | |
102 | if (call->app_call_state != RXRPC_CSTATE_CLNT_RCV_REPLY || | |
103 | signal_pending(current)) | |
104 | break; | |
105 | schedule(); | |
106 | } | |
107 | set_current_state(TASK_RUNNING); | |
108 | ||
109 | ret = -EINTR; | |
110 | if (signal_pending(current)) | |
111 | goto abort; | |
112 | ||
113 | switch (call->app_call_state) { | |
114 | case RXRPC_CSTATE_ERROR: | |
115 | ret = call->app_errno; | |
116 | kdebug("Got Error: %d", ret); | |
117 | goto out_unwait; | |
118 | ||
119 | case RXRPC_CSTATE_CLNT_GOT_REPLY: | |
120 | /* read the reply */ | |
121 | kdebug("Got Reply: qty=%d", call->app_ready_qty); | |
122 | ||
123 | ret = -EBADMSG; | |
124 | if (call->app_ready_qty <= 4) | |
125 | goto abort; | |
126 | ||
127 | ret = rxrpc_call_read_data(call, NULL, call->app_ready_qty, 0); | |
128 | if (ret < 0) | |
129 | goto abort; | |
130 | ||
131 | #if 0 | |
132 | /* unmarshall the reply */ | |
133 | bp = buffer; | |
134 | for (loop = 0; loop < 65; loop++) | |
135 | entry->name[loop] = ntohl(*bp++); | |
136 | entry->name[64] = 0; | |
137 | ||
138 | entry->type = ntohl(*bp++); | |
139 | entry->num_servers = ntohl(*bp++); | |
140 | ||
141 | for (loop = 0; loop < 8; loop++) | |
142 | entry->servers[loop].addr.s_addr = *bp++; | |
143 | ||
144 | for (loop = 0; loop < 8; loop++) | |
145 | entry->servers[loop].partition = ntohl(*bp++); | |
146 | ||
147 | for (loop = 0; loop < 8; loop++) | |
148 | entry->servers[loop].flags = ntohl(*bp++); | |
149 | ||
150 | for (loop = 0; loop < 3; loop++) | |
151 | entry->volume_ids[loop] = ntohl(*bp++); | |
152 | ||
153 | entry->clone_id = ntohl(*bp++); | |
154 | entry->flags = ntohl(*bp); | |
155 | #endif | |
156 | ||
157 | /* success */ | |
158 | ret = 0; | |
159 | goto out_unwait; | |
160 | ||
161 | default: | |
162 | BUG(); | |
163 | } | |
164 | ||
165 | abort: | |
166 | set_current_state(TASK_UNINTERRUPTIBLE); | |
167 | rxrpc_call_abort(call, ret); | |
168 | schedule(); | |
169 | out_unwait: | |
170 | set_current_state(TASK_RUNNING); | |
171 | remove_wait_queue(&call->waitq, &myself); | |
172 | rxrpc_put_call(call); | |
173 | out_put_conn: | |
174 | afs_server_release_fsconn(server, conn); | |
175 | out: | |
176 | kleave(""); | |
177 | return ret; | |
178 | } /* end afs_rxfs_get_root_volume() */ | |
179 | #endif | |
180 | ||
181 | /*****************************************************************************/ | |
182 | /* | |
183 | * get information about a volume | |
184 | */ | |
185 | #if 0 | |
186 | int afs_rxfs_get_volume_info(struct afs_server *server, | |
187 | const char *name, | |
188 | struct afs_volume_info *vinfo) | |
189 | { | |
190 | struct rxrpc_connection *conn; | |
191 | struct rxrpc_call *call; | |
192 | struct kvec piov[3]; | |
193 | size_t sent; | |
194 | int ret; | |
195 | u32 param[2], *bp, zero; | |
196 | ||
197 | DECLARE_WAITQUEUE(myself, current); | |
198 | ||
199 | _enter("%p,%s,%p", server, name, vinfo); | |
200 | ||
201 | /* get hold of the fileserver connection */ | |
202 | ret = afs_server_get_fsconn(server, &conn); | |
203 | if (ret < 0) | |
204 | goto out; | |
205 | ||
206 | /* create a call through that connection */ | |
207 | ret = rxrpc_create_call(conn, NULL, NULL, afs_rxfs_aemap, &call); | |
208 | if (ret < 0) { | |
209 | printk("kAFS: Unable to create call: %d\n", ret); | |
210 | goto out_put_conn; | |
211 | } | |
212 | call->app_opcode = FSGETVOLUMEINFO; | |
213 | ||
214 | /* we want to get event notifications from the call */ | |
215 | add_wait_queue(&call->waitq, &myself); | |
216 | ||
217 | /* marshall the parameters */ | |
218 | piov[1].iov_len = strlen(name); | |
219 | piov[1].iov_base = (char *) name; | |
220 | ||
221 | zero = 0; | |
222 | piov[2].iov_len = (4 - (piov[1].iov_len & 3)) & 3; | |
223 | piov[2].iov_base = &zero; | |
224 | ||
225 | param[0] = htonl(FSGETVOLUMEINFO); | |
226 | param[1] = htonl(piov[1].iov_len); | |
227 | ||
228 | piov[0].iov_len = sizeof(param); | |
229 | piov[0].iov_base = param; | |
230 | ||
231 | /* send the parameters to the server */ | |
232 | ret = rxrpc_call_write_data(call, 3, piov, RXRPC_LAST_PACKET, GFP_NOFS, | |
233 | 0, &sent); | |
234 | if (ret < 0) | |
235 | goto abort; | |
236 | ||
237 | /* wait for the reply to completely arrive */ | |
238 | bp = rxrpc_call_alloc_scratch(call, 64); | |
239 | ||
240 | ret = rxrpc_call_read_data(call, bp, 64, | |
241 | RXRPC_CALL_READ_BLOCK | | |
242 | RXRPC_CALL_READ_ALL); | |
243 | if (ret < 0) { | |
244 | if (ret == -ECONNABORTED) { | |
245 | ret = call->app_errno; | |
246 | goto out_unwait; | |
247 | } | |
248 | goto abort; | |
249 | } | |
250 | ||
251 | /* unmarshall the reply */ | |
252 | vinfo->vid = ntohl(*bp++); | |
253 | vinfo->type = ntohl(*bp++); | |
254 | ||
255 | vinfo->type_vids[0] = ntohl(*bp++); | |
256 | vinfo->type_vids[1] = ntohl(*bp++); | |
257 | vinfo->type_vids[2] = ntohl(*bp++); | |
258 | vinfo->type_vids[3] = ntohl(*bp++); | |
259 | vinfo->type_vids[4] = ntohl(*bp++); | |
260 | ||
261 | vinfo->nservers = ntohl(*bp++); | |
262 | vinfo->servers[0].addr.s_addr = *bp++; | |
263 | vinfo->servers[1].addr.s_addr = *bp++; | |
264 | vinfo->servers[2].addr.s_addr = *bp++; | |
265 | vinfo->servers[3].addr.s_addr = *bp++; | |
266 | vinfo->servers[4].addr.s_addr = *bp++; | |
267 | vinfo->servers[5].addr.s_addr = *bp++; | |
268 | vinfo->servers[6].addr.s_addr = *bp++; | |
269 | vinfo->servers[7].addr.s_addr = *bp++; | |
270 | ||
271 | ret = -EBADMSG; | |
272 | if (vinfo->nservers > 8) | |
273 | goto abort; | |
274 | ||
275 | /* success */ | |
276 | ret = 0; | |
277 | ||
278 | out_unwait: | |
279 | set_current_state(TASK_RUNNING); | |
280 | remove_wait_queue(&call->waitq, &myself); | |
281 | rxrpc_put_call(call); | |
282 | out_put_conn: | |
283 | afs_server_release_fsconn(server, conn); | |
284 | out: | |
285 | _leave(""); | |
286 | return ret; | |
287 | ||
288 | abort: | |
289 | set_current_state(TASK_UNINTERRUPTIBLE); | |
290 | rxrpc_call_abort(call, ret); | |
291 | schedule(); | |
292 | goto out_unwait; | |
293 | ||
294 | } /* end afs_rxfs_get_volume_info() */ | |
295 | #endif | |
296 | ||
297 | /*****************************************************************************/ | |
298 | /* | |
299 | * fetch the status information for a file | |
300 | */ | |
301 | int afs_rxfs_fetch_file_status(struct afs_server *server, | |
302 | struct afs_vnode *vnode, | |
303 | struct afs_volsync *volsync) | |
304 | { | |
305 | struct afs_server_callslot callslot; | |
306 | struct rxrpc_call *call; | |
307 | struct kvec piov[1]; | |
308 | size_t sent; | |
309 | int ret; | |
310 | __be32 *bp; | |
311 | ||
312 | DECLARE_WAITQUEUE(myself, current); | |
313 | ||
314 | _enter("%p,{%u,%u,%u}", | |
315 | server, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique); | |
316 | ||
317 | /* get hold of the fileserver connection */ | |
318 | ret = afs_server_request_callslot(server, &callslot); | |
319 | if (ret < 0) | |
320 | goto out; | |
321 | ||
322 | /* create a call through that connection */ | |
323 | ret = rxrpc_create_call(callslot.conn, NULL, NULL, afs_rxfs_aemap, | |
324 | &call); | |
325 | if (ret < 0) { | |
326 | printk("kAFS: Unable to create call: %d\n", ret); | |
327 | goto out_put_conn; | |
328 | } | |
329 | call->app_opcode = FSFETCHSTATUS; | |
330 | ||
331 | /* we want to get event notifications from the call */ | |
332 | add_wait_queue(&call->waitq, &myself); | |
333 | ||
334 | /* marshall the parameters */ | |
335 | bp = rxrpc_call_alloc_scratch(call, 16); | |
336 | bp[0] = htonl(FSFETCHSTATUS); | |
337 | bp[1] = htonl(vnode->fid.vid); | |
338 | bp[2] = htonl(vnode->fid.vnode); | |
339 | bp[3] = htonl(vnode->fid.unique); | |
340 | ||
341 | piov[0].iov_len = 16; | |
342 | piov[0].iov_base = bp; | |
343 | ||
344 | /* send the parameters to the server */ | |
345 | ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS, | |
346 | 0, &sent); | |
347 | if (ret < 0) | |
348 | goto abort; | |
349 | ||
350 | /* wait for the reply to completely arrive */ | |
351 | bp = rxrpc_call_alloc_scratch(call, 120); | |
352 | ||
353 | ret = rxrpc_call_read_data(call, bp, 120, | |
354 | RXRPC_CALL_READ_BLOCK | | |
355 | RXRPC_CALL_READ_ALL); | |
356 | if (ret < 0) { | |
357 | if (ret == -ECONNABORTED) { | |
358 | ret = call->app_errno; | |
359 | goto out_unwait; | |
360 | } | |
361 | goto abort; | |
362 | } | |
363 | ||
364 | /* unmarshall the reply */ | |
365 | vnode->status.if_version = ntohl(*bp++); | |
366 | vnode->status.type = ntohl(*bp++); | |
367 | vnode->status.nlink = ntohl(*bp++); | |
368 | vnode->status.size = ntohl(*bp++); | |
369 | vnode->status.version = ntohl(*bp++); | |
370 | vnode->status.author = ntohl(*bp++); | |
371 | vnode->status.owner = ntohl(*bp++); | |
372 | vnode->status.caller_access = ntohl(*bp++); | |
373 | vnode->status.anon_access = ntohl(*bp++); | |
374 | vnode->status.mode = ntohl(*bp++); | |
375 | vnode->status.parent.vid = vnode->fid.vid; | |
376 | vnode->status.parent.vnode = ntohl(*bp++); | |
377 | vnode->status.parent.unique = ntohl(*bp++); | |
378 | bp++; /* seg size */ | |
379 | vnode->status.mtime_client = ntohl(*bp++); | |
380 | vnode->status.mtime_server = ntohl(*bp++); | |
381 | bp++; /* group */ | |
382 | bp++; /* sync counter */ | |
383 | vnode->status.version |= ((unsigned long long) ntohl(*bp++)) << 32; | |
384 | bp++; /* spare2 */ | |
385 | bp++; /* spare3 */ | |
386 | bp++; /* spare4 */ | |
387 | ||
388 | vnode->cb_version = ntohl(*bp++); | |
389 | vnode->cb_expiry = ntohl(*bp++); | |
390 | vnode->cb_type = ntohl(*bp++); | |
391 | ||
392 | if (volsync) { | |
393 | volsync->creation = ntohl(*bp++); | |
394 | bp++; /* spare2 */ | |
395 | bp++; /* spare3 */ | |
396 | bp++; /* spare4 */ | |
397 | bp++; /* spare5 */ | |
398 | bp++; /* spare6 */ | |
399 | } | |
400 | ||
401 | /* success */ | |
402 | ret = 0; | |
403 | ||
404 | out_unwait: | |
405 | set_current_state(TASK_RUNNING); | |
406 | remove_wait_queue(&call->waitq, &myself); | |
407 | rxrpc_put_call(call); | |
408 | out_put_conn: | |
409 | afs_server_release_callslot(server, &callslot); | |
410 | out: | |
411 | _leave(""); | |
412 | return ret; | |
413 | ||
414 | abort: | |
415 | set_current_state(TASK_UNINTERRUPTIBLE); | |
416 | rxrpc_call_abort(call, ret); | |
417 | schedule(); | |
418 | goto out_unwait; | |
419 | } /* end afs_rxfs_fetch_file_status() */ | |
420 | ||
421 | /*****************************************************************************/ | |
422 | /* | |
423 | * fetch the contents of a file or directory | |
424 | */ | |
425 | int afs_rxfs_fetch_file_data(struct afs_server *server, | |
426 | struct afs_vnode *vnode, | |
427 | struct afs_rxfs_fetch_descriptor *desc, | |
428 | struct afs_volsync *volsync) | |
429 | { | |
430 | struct afs_server_callslot callslot; | |
431 | struct rxrpc_call *call; | |
432 | struct kvec piov[1]; | |
433 | size_t sent; | |
434 | int ret; | |
435 | __be32 *bp; | |
436 | ||
437 | DECLARE_WAITQUEUE(myself, current); | |
438 | ||
439 | _enter("%p,{fid={%u,%u,%u},sz=%Zu,of=%lu}", | |
440 | server, | |
441 | desc->fid.vid, | |
442 | desc->fid.vnode, | |
443 | desc->fid.unique, | |
444 | desc->size, | |
445 | desc->offset); | |
446 | ||
447 | /* get hold of the fileserver connection */ | |
448 | ret = afs_server_request_callslot(server, &callslot); | |
449 | if (ret < 0) | |
450 | goto out; | |
451 | ||
452 | /* create a call through that connection */ | |
453 | ret = rxrpc_create_call(callslot.conn, NULL, NULL, afs_rxfs_aemap, &call); | |
454 | if (ret < 0) { | |
455 | printk("kAFS: Unable to create call: %d\n", ret); | |
456 | goto out_put_conn; | |
457 | } | |
458 | call->app_opcode = FSFETCHDATA; | |
459 | ||
460 | /* we want to get event notifications from the call */ | |
461 | add_wait_queue(&call->waitq, &myself); | |
462 | ||
463 | /* marshall the parameters */ | |
464 | bp = rxrpc_call_alloc_scratch(call, 24); | |
465 | bp[0] = htonl(FSFETCHDATA); | |
466 | bp[1] = htonl(desc->fid.vid); | |
467 | bp[2] = htonl(desc->fid.vnode); | |
468 | bp[3] = htonl(desc->fid.unique); | |
469 | bp[4] = htonl(desc->offset); | |
470 | bp[5] = htonl(desc->size); | |
471 | ||
472 | piov[0].iov_len = 24; | |
473 | piov[0].iov_base = bp; | |
474 | ||
475 | /* send the parameters to the server */ | |
476 | ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS, | |
477 | 0, &sent); | |
478 | if (ret < 0) | |
479 | goto abort; | |
480 | ||
481 | /* wait for the data count to arrive */ | |
482 | ret = rxrpc_call_read_data(call, bp, 4, RXRPC_CALL_READ_BLOCK); | |
483 | if (ret < 0) | |
484 | goto read_failed; | |
485 | ||
486 | desc->actual = ntohl(bp[0]); | |
487 | if (desc->actual != desc->size) { | |
488 | ret = -EBADMSG; | |
489 | goto abort; | |
490 | } | |
491 | ||
492 | /* call the app to read the actual data */ | |
493 | rxrpc_call_reset_scratch(call); | |
494 | ||
495 | ret = rxrpc_call_read_data(call, desc->buffer, desc->actual, | |
496 | RXRPC_CALL_READ_BLOCK); | |
497 | if (ret < 0) | |
498 | goto read_failed; | |
499 | ||
500 | /* wait for the rest of the reply to completely arrive */ | |
501 | rxrpc_call_reset_scratch(call); | |
502 | bp = rxrpc_call_alloc_scratch(call, 120); | |
503 | ||
504 | ret = rxrpc_call_read_data(call, bp, 120, | |
505 | RXRPC_CALL_READ_BLOCK | | |
506 | RXRPC_CALL_READ_ALL); | |
507 | if (ret < 0) | |
508 | goto read_failed; | |
509 | ||
510 | /* unmarshall the reply */ | |
511 | vnode->status.if_version = ntohl(*bp++); | |
512 | vnode->status.type = ntohl(*bp++); | |
513 | vnode->status.nlink = ntohl(*bp++); | |
514 | vnode->status.size = ntohl(*bp++); | |
515 | vnode->status.version = ntohl(*bp++); | |
516 | vnode->status.author = ntohl(*bp++); | |
517 | vnode->status.owner = ntohl(*bp++); | |
518 | vnode->status.caller_access = ntohl(*bp++); | |
519 | vnode->status.anon_access = ntohl(*bp++); | |
520 | vnode->status.mode = ntohl(*bp++); | |
521 | vnode->status.parent.vid = desc->fid.vid; | |
522 | vnode->status.parent.vnode = ntohl(*bp++); | |
523 | vnode->status.parent.unique = ntohl(*bp++); | |
524 | bp++; /* seg size */ | |
525 | vnode->status.mtime_client = ntohl(*bp++); | |
526 | vnode->status.mtime_server = ntohl(*bp++); | |
527 | bp++; /* group */ | |
528 | bp++; /* sync counter */ | |
529 | vnode->status.version |= ((unsigned long long) ntohl(*bp++)) << 32; | |
530 | bp++; /* spare2 */ | |
531 | bp++; /* spare3 */ | |
532 | bp++; /* spare4 */ | |
533 | ||
534 | vnode->cb_version = ntohl(*bp++); | |
535 | vnode->cb_expiry = ntohl(*bp++); | |
536 | vnode->cb_type = ntohl(*bp++); | |
537 | ||
538 | if (volsync) { | |
539 | volsync->creation = ntohl(*bp++); | |
540 | bp++; /* spare2 */ | |
541 | bp++; /* spare3 */ | |
542 | bp++; /* spare4 */ | |
543 | bp++; /* spare5 */ | |
544 | bp++; /* spare6 */ | |
545 | } | |
546 | ||
547 | /* success */ | |
548 | ret = 0; | |
549 | ||
550 | out_unwait: | |
551 | set_current_state(TASK_RUNNING); | |
552 | remove_wait_queue(&call->waitq,&myself); | |
553 | rxrpc_put_call(call); | |
554 | out_put_conn: | |
555 | afs_server_release_callslot(server, &callslot); | |
556 | out: | |
557 | _leave(" = %d", ret); | |
558 | return ret; | |
559 | ||
560 | read_failed: | |
561 | if (ret == -ECONNABORTED) { | |
562 | ret = call->app_errno; | |
563 | goto out_unwait; | |
564 | } | |
565 | ||
566 | abort: | |
567 | set_current_state(TASK_UNINTERRUPTIBLE); | |
568 | rxrpc_call_abort(call, ret); | |
569 | schedule(); | |
570 | goto out_unwait; | |
571 | ||
572 | } /* end afs_rxfs_fetch_file_data() */ | |
573 | ||
574 | /*****************************************************************************/ | |
575 | /* | |
576 | * ask the AFS fileserver to discard a callback request on a file | |
577 | */ | |
578 | int afs_rxfs_give_up_callback(struct afs_server *server, | |
579 | struct afs_vnode *vnode) | |
580 | { | |
581 | struct afs_server_callslot callslot; | |
582 | struct rxrpc_call *call; | |
583 | struct kvec piov[1]; | |
584 | size_t sent; | |
585 | int ret; | |
586 | __be32 *bp; | |
587 | ||
588 | DECLARE_WAITQUEUE(myself, current); | |
589 | ||
590 | _enter("%p,{%u,%u,%u}", | |
591 | server, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique); | |
592 | ||
593 | /* get hold of the fileserver connection */ | |
594 | ret = afs_server_request_callslot(server, &callslot); | |
595 | if (ret < 0) | |
596 | goto out; | |
597 | ||
598 | /* create a call through that connection */ | |
599 | ret = rxrpc_create_call(callslot.conn, NULL, NULL, afs_rxfs_aemap, &call); | |
600 | if (ret < 0) { | |
601 | printk("kAFS: Unable to create call: %d\n", ret); | |
602 | goto out_put_conn; | |
603 | } | |
604 | call->app_opcode = FSGIVEUPCALLBACKS; | |
605 | ||
606 | /* we want to get event notifications from the call */ | |
607 | add_wait_queue(&call->waitq, &myself); | |
608 | ||
609 | /* marshall the parameters */ | |
610 | bp = rxrpc_call_alloc_scratch(call, (1 + 4 + 4) * 4); | |
611 | ||
612 | piov[0].iov_len = (1 + 4 + 4) * 4; | |
613 | piov[0].iov_base = bp; | |
614 | ||
615 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
616 | *bp++ = htonl(1); | |
617 | *bp++ = htonl(vnode->fid.vid); | |
618 | *bp++ = htonl(vnode->fid.vnode); | |
619 | *bp++ = htonl(vnode->fid.unique); | |
620 | *bp++ = htonl(1); | |
621 | *bp++ = htonl(vnode->cb_version); | |
622 | *bp++ = htonl(vnode->cb_expiry); | |
623 | *bp++ = htonl(vnode->cb_type); | |
624 | ||
625 | /* send the parameters to the server */ | |
626 | ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS, | |
627 | 0, &sent); | |
628 | if (ret < 0) | |
629 | goto abort; | |
630 | ||
631 | /* wait for the reply to completely arrive */ | |
632 | for (;;) { | |
633 | set_current_state(TASK_INTERRUPTIBLE); | |
634 | if (call->app_call_state != RXRPC_CSTATE_CLNT_RCV_REPLY || | |
635 | signal_pending(current)) | |
636 | break; | |
637 | schedule(); | |
638 | } | |
639 | set_current_state(TASK_RUNNING); | |
640 | ||
641 | ret = -EINTR; | |
642 | if (signal_pending(current)) | |
643 | goto abort; | |
644 | ||
645 | switch (call->app_call_state) { | |
646 | case RXRPC_CSTATE_ERROR: | |
647 | ret = call->app_errno; | |
648 | goto out_unwait; | |
649 | ||
650 | case RXRPC_CSTATE_CLNT_GOT_REPLY: | |
651 | ret = 0; | |
652 | goto out_unwait; | |
653 | ||
654 | default: | |
655 | BUG(); | |
656 | } | |
657 | ||
658 | out_unwait: | |
659 | set_current_state(TASK_RUNNING); | |
660 | remove_wait_queue(&call->waitq, &myself); | |
661 | rxrpc_put_call(call); | |
662 | out_put_conn: | |
663 | afs_server_release_callslot(server, &callslot); | |
664 | out: | |
665 | _leave(""); | |
666 | return ret; | |
667 | ||
668 | abort: | |
669 | set_current_state(TASK_UNINTERRUPTIBLE); | |
670 | rxrpc_call_abort(call, ret); | |
671 | schedule(); | |
672 | goto out_unwait; | |
673 | } /* end afs_rxfs_give_up_callback() */ | |
674 | ||
675 | /*****************************************************************************/ | |
676 | /* | |
677 | * look a filename up in a directory | |
678 | * - this operation doesn't seem to work correctly in OpenAFS server 1.2.2 | |
679 | */ | |
680 | #if 0 | |
681 | int afs_rxfs_lookup(struct afs_server *server, | |
682 | struct afs_vnode *dir, | |
683 | const char *filename, | |
684 | struct afs_vnode *vnode, | |
685 | struct afs_volsync *volsync) | |
686 | { | |
687 | struct rxrpc_connection *conn; | |
688 | struct rxrpc_call *call; | |
689 | struct kvec piov[3]; | |
690 | size_t sent; | |
691 | int ret; | |
692 | u32 *bp, zero; | |
693 | ||
694 | DECLARE_WAITQUEUE(myself, current); | |
695 | ||
696 | kenter("%p,{%u,%u,%u},%s", | |
697 | server, fid->vid, fid->vnode, fid->unique, filename); | |
698 | ||
699 | /* get hold of the fileserver connection */ | |
700 | ret = afs_server_get_fsconn(server, &conn); | |
701 | if (ret < 0) | |
702 | goto out; | |
703 | ||
704 | /* create a call through that connection */ | |
705 | ret = rxrpc_create_call(conn, NULL, NULL, afs_rxfs_aemap, &call); | |
706 | if (ret < 0) { | |
707 | printk("kAFS: Unable to create call: %d\n", ret); | |
708 | goto out_put_conn; | |
709 | } | |
710 | call->app_opcode = FSLOOKUP; | |
711 | ||
712 | /* we want to get event notifications from the call */ | |
713 | add_wait_queue(&call->waitq,&myself); | |
714 | ||
715 | /* marshall the parameters */ | |
716 | bp = rxrpc_call_alloc_scratch(call, 20); | |
717 | ||
718 | zero = 0; | |
719 | ||
720 | piov[0].iov_len = 20; | |
721 | piov[0].iov_base = bp; | |
722 | piov[1].iov_len = strlen(filename); | |
723 | piov[1].iov_base = (char *) filename; | |
724 | piov[2].iov_len = (4 - (piov[1].iov_len & 3)) & 3; | |
725 | piov[2].iov_base = &zero; | |
726 | ||
727 | *bp++ = htonl(FSLOOKUP); | |
728 | *bp++ = htonl(dirfid->vid); | |
729 | *bp++ = htonl(dirfid->vnode); | |
730 | *bp++ = htonl(dirfid->unique); | |
731 | *bp++ = htonl(piov[1].iov_len); | |
732 | ||
733 | /* send the parameters to the server */ | |
734 | ret = rxrpc_call_write_data(call, 3, piov, RXRPC_LAST_PACKET, GFP_NOFS, | |
735 | 0, &sent); | |
736 | if (ret < 0) | |
737 | goto abort; | |
738 | ||
739 | /* wait for the reply to completely arrive */ | |
740 | bp = rxrpc_call_alloc_scratch(call, 220); | |
741 | ||
742 | ret = rxrpc_call_read_data(call, bp, 220, | |
743 | RXRPC_CALL_READ_BLOCK | | |
744 | RXRPC_CALL_READ_ALL); | |
745 | if (ret < 0) { | |
746 | if (ret == -ECONNABORTED) { | |
747 | ret = call->app_errno; | |
748 | goto out_unwait; | |
749 | } | |
750 | goto abort; | |
751 | } | |
752 | ||
753 | /* unmarshall the reply */ | |
754 | fid->vid = ntohl(*bp++); | |
755 | fid->vnode = ntohl(*bp++); | |
756 | fid->unique = ntohl(*bp++); | |
757 | ||
758 | vnode->status.if_version = ntohl(*bp++); | |
759 | vnode->status.type = ntohl(*bp++); | |
760 | vnode->status.nlink = ntohl(*bp++); | |
761 | vnode->status.size = ntohl(*bp++); | |
762 | vnode->status.version = ntohl(*bp++); | |
763 | vnode->status.author = ntohl(*bp++); | |
764 | vnode->status.owner = ntohl(*bp++); | |
765 | vnode->status.caller_access = ntohl(*bp++); | |
766 | vnode->status.anon_access = ntohl(*bp++); | |
767 | vnode->status.mode = ntohl(*bp++); | |
768 | vnode->status.parent.vid = dirfid->vid; | |
769 | vnode->status.parent.vnode = ntohl(*bp++); | |
770 | vnode->status.parent.unique = ntohl(*bp++); | |
771 | bp++; /* seg size */ | |
772 | vnode->status.mtime_client = ntohl(*bp++); | |
773 | vnode->status.mtime_server = ntohl(*bp++); | |
774 | bp++; /* group */ | |
775 | bp++; /* sync counter */ | |
776 | vnode->status.version |= ((unsigned long long) ntohl(*bp++)) << 32; | |
777 | bp++; /* spare2 */ | |
778 | bp++; /* spare3 */ | |
779 | bp++; /* spare4 */ | |
780 | ||
781 | dir->status.if_version = ntohl(*bp++); | |
782 | dir->status.type = ntohl(*bp++); | |
783 | dir->status.nlink = ntohl(*bp++); | |
784 | dir->status.size = ntohl(*bp++); | |
785 | dir->status.version = ntohl(*bp++); | |
786 | dir->status.author = ntohl(*bp++); | |
787 | dir->status.owner = ntohl(*bp++); | |
788 | dir->status.caller_access = ntohl(*bp++); | |
789 | dir->status.anon_access = ntohl(*bp++); | |
790 | dir->status.mode = ntohl(*bp++); | |
791 | dir->status.parent.vid = dirfid->vid; | |
792 | dir->status.parent.vnode = ntohl(*bp++); | |
793 | dir->status.parent.unique = ntohl(*bp++); | |
794 | bp++; /* seg size */ | |
795 | dir->status.mtime_client = ntohl(*bp++); | |
796 | dir->status.mtime_server = ntohl(*bp++); | |
797 | bp++; /* group */ | |
798 | bp++; /* sync counter */ | |
799 | dir->status.version |= ((unsigned long long) ntohl(*bp++)) << 32; | |
800 | bp++; /* spare2 */ | |
801 | bp++; /* spare3 */ | |
802 | bp++; /* spare4 */ | |
803 | ||
804 | callback->fid = *fid; | |
805 | callback->version = ntohl(*bp++); | |
806 | callback->expiry = ntohl(*bp++); | |
807 | callback->type = ntohl(*bp++); | |
808 | ||
809 | if (volsync) { | |
810 | volsync->creation = ntohl(*bp++); | |
811 | bp++; /* spare2 */ | |
812 | bp++; /* spare3 */ | |
813 | bp++; /* spare4 */ | |
814 | bp++; /* spare5 */ | |
815 | bp++; /* spare6 */ | |
816 | } | |
817 | ||
818 | /* success */ | |
819 | ret = 0; | |
820 | ||
821 | out_unwait: | |
822 | set_current_state(TASK_RUNNING); | |
823 | remove_wait_queue(&call->waitq, &myself); | |
824 | rxrpc_put_call(call); | |
825 | out_put_conn: | |
826 | afs_server_release_fsconn(server, conn); | |
827 | out: | |
828 | kleave(""); | |
829 | return ret; | |
830 | ||
831 | abort: | |
832 | set_current_state(TASK_UNINTERRUPTIBLE); | |
833 | rxrpc_call_abort(call, ret); | |
834 | schedule(); | |
835 | goto out_unwait; | |
836 | } /* end afs_rxfs_lookup() */ | |
837 | #endif |